Long agricultural range to W of Great Harmeston House, including cartsheds and food processing store

This building is a long agricultural range located to the west of Great Harmeston House, which includes cartsheds and a food processing store. The main lofted structure is made of whitewashed rubble stone and features three loft openings. The outer openings have windows with slate sills, while the center opening is larger and has double doors. The ground floor includes openings with cambered hoodmoulds and voussoirs. To the left, there is a cambered-headed cart entry with a brick head and a door with a timber lintel, along with three altered openings that likely were originally a stable, consisting of a window, door, and window, with one door and two windows now blocked. A door with a timber lintel is located at the extreme right, and the right end has a blocked loft window with a brick head. The rear of the building has two loft windows and a central door.

To the left, there is a brick-fronted rubble stone range that shows flaking whitewash on the front. It has two loft openings above a cambered-headed cart-entry door that has been later narrowed, and a pair of similar doorways to the right, separated by a stone pier. The brick arched heads of these doorways are recessed and feature cambered hoodmoulds, voussoirs, and keystones. Above the keystones, there are eroded carved headstones that may be late medieval and have been reused. The left end wall incorporates pieces of carved ashlar, one of which has a rose-trail pattern.

The rear of this range is made of rubble stone and includes a rubble stone section at right angles, featuring a brick ventilation loop and a cambered-headed wide doorway with a framed board door. The roofs are mostly covered with asbestos sheet.

The interior has not been inspected, but the older range was used as a food-processing store and is fully open on the ground floor with cast-iron pillars. A motor gristmill is retained within this space. The brick-fronted range has a full-height brick dividing wall between its two sections, and the wall connecting to the earlier range is made of both rubble and brick, including a blocked doorway that provided access to the former loft. The eastern end has a full-height rubble wall, and the rear range features a five-bay roof supported by metal-pegged trusses.